Oil vaporizing device for oil burners



0a. 19, 1965 E. JOHANSSON 3,212,556

OIL VAPORIZING DEVICE FOR OIL BURNERS Filed March 16, 1962 FIG.1. 74 i6 INVENTOR Ernest Joh son Q/AHORNEY United States Patent 3,212,556 OIL VAPORIZING DEVICE FOR OIL BURNERS Ernest Johansson, 111 Grant Ave., Cresskill, NJ. Filed Mar. 16, 1962, Ser. No. 180,206 1 Claim. (Cl. 15873) This invention relates to an oil vaporizing device for oil burners and more particularly to means by which more heat can be obtained from the combustion of the fuel oil.

The introduction of air to make combustion possible, has a cooling effect on the oil particles, and such effect contributes to the condition that makes it possible for some of the oil particles to escape without combustion. This condition is rectified by means of the present invention.

It is one of the objects of the invention to provide means by which the temperature of the oil is increased to or above the firepoint of the oil immediately after the oil enters the combustion chamber. a

When the oil is sprayed into a combustion chamber and ignited, there are some particles which do not ignite during the short period in which the fuel is passing through the combustion chamber and is carried out through the chimney or exhaust pipe without combustion. It is an object of the invention to provide in the path of the nozzle ejection, heating means which will establish an atmosphere at a temperature above the firepoint of the oil thereby causing combustion of all oil passing through this high temperature section of the combustion chamber.

More particularly, the invention contemplates the provision of a metal plate, preferably in the form of a thin walled metallic cone having its convex side directed toward the burner nozzle, and by which the spreading and heating of the oil will be effective to result in a more complete mixture and ignition of the fuel. The burning oil brings the temperature of the plate beyond the boiling point of the oil and the plate or cone is heat conductive and acts to attain a complete combustion of all of the oil particles reaching the combustion chamber.

With these and other objects to be set forth hereafter, in view, I have devised the arrangement of parts to be described and more particularly pointed out in the claim appended hereto.

In the accompanying drawings, wherein an illustrative embodiment of the invention is disclosed,

FIG. 1 is a side elevational view, with parts in section, of an oil burner attachment constructed in accordance with the invention;

FIG. 2 is a face view of the cone-supporting frame, the view being taken substantially on the line 22 of FIG. 3, looking in the direction of the arrows;

FIG. 3 is a side elevational view of the cone-support and the cone maintained thereby;

FIG. 4 is a front elevational view, on a reduced scale, of the clamping ring, and

FIG. 5 is a side elevational view of the clamping ring.

The device to be described is located within the combustion chamber of an oil burner, and referring to the drawings, 1 indicates the conventional cylindrical air tube that extends from the blower housing of an oil burner of the so-called gun type. Located within the tube 1 is the oil spray nozzle 2 from which the oil is sprayed to be ignited by the spark from the electrodes 3 and 4.

Fitted around the outside of the air tube 1 is a clamp 5 in the form of a split ring (FIGS. 4 and 5), one half of which is provided with the ears 6 and with the other half having the ears 7. Bolts 8, passing through the apertures in the ears 6 and 7 of both of the halves of 3,212,556 Patented Oct. 19, 1965 the ring, act to securely clamp the ring around the air tube adjacent to its forward end.

Located at diametrically opposite points on the clamping ring 5 are radially-extending lugs 9, each of which is provided with a threaded aperture 10 to threadably accommodate the end of a bolt or threaded stud 11. The two bolts 11, extending from the clamping ring 5 in a direction axially of the air tube 1, pass through apertures 12 in a supporting plate or frame 13, which is adjustably secured on the bolts 11 by means of nuts 14 and 15. Projecting laterally from one face of the plate or frame 13 and also extending axially of the burner tube 1, are four equally-spaced strips or bars 16, and the same are attached at their outer ends to the larger end area of a metal cone 17. The bars 16 have suflicient length to locate the plate or frame outside of the flame 19 of the burning fuel so as not to interfere with the spreading of the fuel.

The cone 17 is composed of relatively thin, heat-conducting metal such as steel of a thickness of about $5 and it is mounted in the opening 20 in the frame 13 in a manner that its apex is aligned with the nozzle outlet and its convex side is directed toward the nozzle. The desired spacing of the cone from the end of the nozzle to result in the most effective combustion of the fuel, is attained by adjusting the plate 13 along the bolts 11 to the required point and then tightening the nuts 14 and 15 to thereby maintain the adjusted position of the cone. By being able to move and position the cone as above described, it is possible to find the most favorable location of the cone in the flame 19 of the burner and it was found that when the cone was moved to a position in which it was entirely enveloped by the flame, the color of the flame changed from yellow to a more brilliant color and smoke disappeared from the flame and from the chimney, and clear gas emanated from the chimney. The opening 20 in the frame 13 is made sufficiently large to permit the passage of the fuel through it to reach the cone, without the fuel contacting the frame.

In the operation of the device, the plate or cone 17, located in the flame 19 of the burning oil, is heated by the heat therefrom. The flame, impinging against the convex side 18 of the cone, brings the cone to a temperature beyond the boiling point of the oil so that any oil contacting the cone will change to gas, which will then go into combustion at that temperature. Thus, the function of the device is to change the oil into gas in the combustion chamber and to raise the temperature of this gas sufliciently above the boiling point of the oil so that the cooling of the flame by the cold air and oil entering the combustion chamber will not lower the temperature of the flame to a temperature at which some of the oil may pass through the combustion chamber without complete combustion. It will, of course, be understood that the metal used for this device and the means for coupling the elements thereof together must be able to withstand very high temperature without becoming deteriorated.

The cone or plate 17 can, if desired, be heated by using electric power as an additional heating source to obtain a still higher temperaturef Electric heating can also be used as a primary source for heating the cone or plate.

While I have herein described the imperforate member 17 as being a cone, it will be apparent that it might also be made spherical, hemispherical, or of other suitable shape depending upon the design of the burner.

Having thus described a single embodiment of the invention, it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claim.

What I claim is:

An oil burner having an air tube, a spray nozzle therein, oil-igniting means adjacent to the nozzle, a clamp surrounding the air tube and carried thereby, threaded elements extending forwardly from the clamp and projecting axially of the air tube, a frame adjustable on the threaded elements, said frame having a central opening, bars extending forwardly from the frame and projecting axially of the air tube, a metallic imperforate cone secured at its larger end to the ends of the bars, the cone having its convex side facing the nozzle and with its apex axially aligned with the nozzle, the cone being spaced from the nozzle for a distance sufficient to enable it to be contacted by the flame from the nozzle, and the cone being positioned so that spacing exists between its convex face and the parts of the frame which define the central opening in the frame, the clamp being in the form of a split ring provided with means for clamping it around the air tube, said ring having radial lugs receiving the threaded ends of the threaded elements, and the imperforate cone being composed of thin, heat-conductive metal.

References Cited by the Examiner UNITED STATES PATENTS 2,121,271 6/38 Szabo 15853 2,220,603 11/40 Hirtz et al. 15873 2,458,630 1/49 Palko 158-28 2,486,137 10/49 Evans 15875 2,548,421 4/51 Christenson 11097 2,732,890 1/56 V'ignere 15828 FOREIGN PATENTS 596,448 8/25 France.

1,151,631 8/57 France.

FREDERICK L. MATTESON, ]R., Primary Examiner.

PERCY L. PATRICK, MEYER PERLIN, JAMES W.

WESTI-IAVER, Examiners. 

